Automatic shearing and milling machine.



Patented lam-29, I90].

a. w. PACKER. AUTOMATIC SHEABING AND MILLING MACHINE.

(Application filed am. so, 1900.,

5 Sheets-Sheet I.

(No Model.)

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No. 666,905. Patented Jan. 29, 190i;

6. w. PACKER.

AUTOMATIC SHEARING AND MILLING MACHINE.

(Application filed Mar. 30, 1900.;

.(No Model.) 5 Sheots8heet 3.

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No. 666,905. Patented Ian. 29, l90l. G. W. PACKER.

AUTOMATIC SIIEAIIING AND MILLING MACHINE. (Application filed Mar. 30,1900.|

(No Model.) 5 Sheets$heet 4.

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D 4 D g No. 666,905. Patented Jan. 29, MIL

G. W. PACKER.

AUTDMATIC SHEABING AND MILLING MACHINE.

(Application filed Mar. 39, 1900.) (No Model.) 5 Sheets-Sheet 5.

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W/7NE86E8. INVENTORZ 4mm? I :UNITED STATES PATENT OFFICE.

GEORGE W. PAOKER, OF CHICAGO, ILLINOIS.

AUTOMATIC SHEARING AND MILLING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 666,905, dated January29, 1901.

Application filed March 30, 1900. $erial No. 10,825. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE W. PAOKER, a citizen of the United States,residing at Ohicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Automatic Shearing andMilling Machines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The object of my invention is to provide a machine which shallautomatically shear, punch, stamp, or perform similar operations uponthe stock that is supplied to it and subsequently to automatically clampand hold the product that it may be machined in the desired manner.

My machine, as herein described, is adapted to automatically shear rodsof steel to the proper length for roller-bearings, such as are used inharvesting machinery, and finally to mill the end of said rollers round.It, however, can be very readily adjusted to do a variety ofmachine-worksuch as drilling, turning, milling, threading, &c.upon thestock;

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which drawings similar letters refer to similarparts through the several views.

Figure l is a side elevation of my machine. Fig. 2 is a front elevation.Fig. 3 is a partial vertical sectional view of the shear, the hop per,and the revolving chucking device. Fig. 4 is a vertical sectional viewshowing the method of mounting the revolving clutch.

5 is a side elevation of the device for actuating the cam-wheels and therevolving chuck in opposite directions. Fig. 6 is a plan view, partly insection, of the mechanism for milling the ends of the rollers. Fig. 7 isa front elevation of the feeding-rollers; Fig. 8 is a side elevation ofthe feeding device.

The general framework corresponds with that of an ordinary shearing orpunching machine.

In Figs. 1 and 2, A is the main frame, A the fly-wheel, A theshearing-head, A the ways, and A the bed, of the machine. Se-

cured to the sides of the bed A, Figs. 2 and 7, is the bracket bcarrying the feeding-rollers B and B. The feed-roller B and thesprocket-wheel 13 Fig. 8, are secured to the shaft 19, which isjournaled in the bracket 5 The feed-roller B is revolubly mounted onshaft 1), which is secured in one end of the link b the other end ofwhich is suit-ably pivoted in the bracket 6 The link 6 and consequentlythe roller B, is held in the proper working position by means of theeyebolt b and made adjustable by means of the wrenchnut b. Thesprocket-wheel B Fig. 2, is secured to the main shaft of theshearing-machine and is connected by means of the chain b to thesprocket B to which it imparts its motion, revolving in the directionindicated by the arrow. On the shearing-head A is secured the shear a.On the bed A are secured the die a and the stop a.

The operation of the feeding device is as follows: The stock is passedbetween the rollers B and B, which force it along by means of frictionthrough the die a until it strikes the stop a, after which time theroller B slips on the stock. The shear a then cuts off the rod,whichupon being released is again forced through the die and the operation isrepeated.

The shaft 0, to which are rigidlysecured the slotted lever O and thelever 0, Figs. 1 and 2, is suitably journaled in the bracket 0, which issecured to the side of the Way A The slotted lever is operated by acrank formed on the end of the main shaft. The crank-pin 0 slides in theslot 0 in its revolution, descending when in the end of the slotfarthest from the center of oscillation of the lever and ascending whenin the end nearest the center. This gives the requisite variablemovement to the lever, rising quickly and falling slowly, as will behereinafter described.

Immediately in front and rigidly secured to the base of the machine isthe framework D, Figs. 1, 2, 4, and 6, of the milling mechanism.

In suitable boxes in the frame D is mounted the shaft D, to which aresecured the camwheels D and the ratchet d, Figs. 4 and 6. Looselymounted upon said shaft D is the revolving chucking device. The mainportion of said device consists of a large heavy wheel E, Figs. 3 and 4,having long hubs e and e, revolving in boxes of the main frame D. To theend of the hub e is secured the ratchet 6 Figs. 4 and 5. An actuatingpawllever F is pivoted to the front of the main framework and placedbetween the ratchets (Z and 6 so that the pawlsfand f, pivoted onopposite sides of the lever F by means of the pinf may engage,respectively, with the ratchets d and c The lever F is connected withthe lever O by means of the connecting-rod C and the universal joint F.The operation of this actuating mechanism is as follows: The oscillationof the slotted lever 0, due to the revolution of the crank on the mainshaft to which it is attached, is imparted to the actuating pawl-lever Fby means of the rock-shaft c, the lever C, the connecting-rod (J and theuniversal joint F. As the lever F ascends the pawl f engages with theratchet e and revolves the ch uckiug device, to which it is secured,from left to right, as shown by the arrow. As the lever F descends thepawlf engages with the ratchet d and revolves the ratchet, the shaft D,to which it is secured, and the cam-wheels D which 'are also secured tothe shaft D, in the opposite directionfrom right to leftas indicated bythe arrow. The pawlf then reengages the ratchet e and the operation isrepeated.

The chucking device, Fig. 3, consists of a heavy wheel E, having pivotednear its periphery a series of bell-cranks E, having one end of eachhardened to form one of thejaws c of the chucks and the other endssupplied with antifriction-rollers c Inserted in the periphery of thewheel E is a series of hard: ened blocks E forming the opposing jaws ofthe chucks. Pivoted' in the main frame D is the lever G, having on oneend the rounded portion g, which engages the antifriction-rollers e ofthe bell-cranks E. The other end of the lever G is connected to the mainframe D by means of the spring g, which supplies to the chucks ayielding uniform pressure.

Immediately above the chucking device and beneath the shear is thehopper H, which conducts the rollers sheared from the bars from theshear to the chucking device. In front of the hopper H, pivoted in thebrackets which support the bed of the shear, are the automatic stops I,Figs. 1, 2, and 3. The stops 1 are operated by means of the rockshaft2', the crank 11', and the connecting-rod I, which is pivoted to theactuating pawl-1ever F.

The operation of the automatic stop and the chucking device is asfollows: The column of rollers h in the hopper H descends, so that thefirst roller rests upon the wheel E, when the actuating-lever F hasdescended to rengage the ratchete When then the actuating-lever Fascends to turn the chucking device, its oscillating motion is impartedto the stops I, forcing their points 11 between the first and secondrollers, separating them, and upon revolution of the chucking deviceallows but one at a time to drop in the chuck. Here the roller lies,being properly guided into position by the guides 2' until the chuckingdevice has revolved a sufficient distance for the friction-roller e ofthe bell-crank E to engage the rounded portion of the lever G, when thejaw e closes against the jaw E and holds the roller firmly. Themechanism is so timed that the chucking device comes to rest,and theroller is held most firmly when it comes to the position at J. Here itis immediately operated upon by the milling-cutters, as will behereinafterdescribed. After being milled the antifriction-roller cleaves the lever g, the bell-crank is released, and the chuck opens,leaving the roller free to drop out into the hopper H below when thechucking device has revolved sufficiently far around.

Journaled in the main framework D are the milling-mandrels K, Figs. 2and 6, one on either side of the chucking device, so that they are inline with the roller when it is firmly held in the chuck, as at J, Figs.3 and 6. The pulleys K are suitably secured to the mandrels K and beltedin any convenient manner to driving-pulleys 011 a countershaft above.The mandrels K are also provided with chucks K adapted to hold thecutter, such as are required to meet the demands of the work. At eitherend of the mandrels K, pivoted to the main frame D just in the rear ofthe shaft D, are the yokelevers L. In the ends of the levers L oppositethe mandrels are footstepbearings Z, adapted to slide in said levers toallow for their oscillation, which bearings receive the end thrust ofthe mandrels. Opposite the footstep-bearings Zare theantifriction-rollers Z, which are journaled in the yoke-levers L. Theseantifriction-rollers Z roll on the successive cam-su rfaces in the thecam-wheels D Mounted also in the main frame D is the guide-rod M, uponwhich are placed the slides m and the springs m, which are madeadjustable by the set-screw collars m These springs serve simply to holdthe mandrels back, so that the rollers shall always follow thecam-surfaces in the cam-wheel D The operation of this portion of mymachine is as follows: When the actuating-lever F ascends, it revolvesthe chucking device to a position where the roller to be operated uponis held firmly. This is accomplished by a quick upward movement, asabove referred to, due to the shortness of the arm of the slotted leverO. The actuating-lever then immediately descends, revolves the cam-wheelD in an opposite direction, and forces the revolving mandrels K in aproper distance to mill the ends of the rollers, since they are held ineffective contact with the cam-surfaces. This is accomplished in as slowa manner as prac tical by the slow descent of the slotted lever 0, dueto its length, as above referred to, so that the cutters may have asmuch time as possible to do their work. Upon passing the highest pointon the cam-surface the mandrels spring back, and the mechanism being sotimed the cam-wheel D ceases its revolution, the actuating-lever againascends, revolving the chucking device, and the operation is repeated.

While in the preferred construction the clutch-wheel E and thecam-wheels D D are rotated in opposite directions, it is obvious that,if preferred, they may be rotated in the same direction,the changesnecessary to adapt the machine to such operation being such as anyskilled mechanic would make without difficulty.

It is obvious that in some cases the machining desired will require theaction of but one mandrel. Hence I do not wish to be understood aslimiting myself to a plurality of mandrels or their operating mechanism.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A machine of the kind described, comprising a shearing device andmechanism for operating the same, a rotatable member provided with aplurality of clamps or chucks adapted to receive and firmly hold theblanks from said device, and mechanism for rotating said member andoperating said clamps or chucks, in combination withoppositely-extending mandrels arranged in line with the clamped blanks,cam-wheels D D arranged to force the mandrels toward each other, meansfor returning the mandrels to their normal position, and mechanism forrotating said cam-wheels and also said mandrels, substantially asdescribed.

2. A machine of the kind described, comprising a shearing device andmechanism for operating the same, a rotatable member provided with aplurality of clamps or chucks adapted to receive and firmly hold theblanks or articles, in combination with a reciprocating mandrel Kcarrying a chuck K means for operating said mandrel, cam-wheels Dadapted to move said mandrel longitudinally as described, means forreturning the mandrel to its normal position, and mechanism foralternately rotating the chuck member and the cams, substantially asdescribed.

3. A machine of the kind described, comprising a shearing device andmechanism for operating the same, a rotatable member provided with aplurality of clamps or chucks adapted to receive and firmly hold theblanks, in combination with one or more reciprocating mandrels, meansfor operating said mandrels, cam-wheels D D adapted to move saidmandrels longitudinally as described, means for returning the mandrelsto their normal position, and mechanism for alternately rotating thechuck member and the cams, at

different rates of speed, substantially as described.

4:. A machine of the kind described, comprising a shearing device andmechanism for operating the same, the slotted lever O, the crank-pin Clocated in the slot 0 of said lever, in combination with a rotatablemember provided with a plurality of clamps or chucks adapted to receiveand firmly hold the blanks, one or more longitudinallymovable mandrels,means for rotating said mand rels, camwheels arranged to longitudinallymove said mandrels, means for returning the mandrels to their normalposition, and means for transmitting the reciprocating movement of thelever 0 to alternately rotate the chuck member and the cams,substantially as described.

5. A machine of the kind described, comprising a shearing deviceprovided with a slotted lever O operated by a crank-pin C 10- cated insaid slot, in combination with a chuck member E provided with aplurality of clamps or chucks EE adapted to receive and firmly hold theblanks or articles, cam-wheels D D longitudinally-movable mandrelsarrangedin line with the cams of said wheels D D and means for rotatingsaid mandrels, spring mechanism arranged to normally hold the mandrelsat their outer limit, the lever F, and the red C transmitting thereciprocating movement of the lever O to thelever E whereby said'chuckand cam wheels are alternately rotated, substantially as described.

6. In a machine of the kind described, clamping mechanism consisting ofthe combination of the following elements; the wheel E, the blocks E andbell-crank lever E, in combination with the single resilient guideleverG, having a spring connected thereto, and means for rotating said wheel,substantially as described.

7. In a machine of the kind described, a longitudinally-movablemachining-mandrel, and means for driving said mandrel, in combinationwith a cam-wheel D yoke-lever L intervened between the free end of themandrel and the cam-wheel, means for rotating said cam-wheel, and meansfor resiliently holding said shaft K in contact with said 16- ver andthe latter in contact with the camwheel, substantially as described.

8. In a machine of the kind described, the shaft D having mountedthereon a ratchet- Wheel d and at one or both ends a cam-wheel D incombination with the clamp or chuck wheel E provided with aratchet-wheel e the reciprocating lever F, provided with pawls engagingsaid ratchet-wheels and adapted upon reciprocating said lever toalternately rotate said shaft and said chuck-wheel, and means fortransmitting the cam action of said wheel D to a longitudinally-movablemachining-shaft K, substantially as described.

9. In a shearing and milling machine, the combination of a shaft, achuck, or clamp wheel for holding the material to be treated on saidshaft, a mandrel adapted to act on the [0 material held by theclamp-Wheel, and means for turning the clamp-Wheel rapidly in onedirection, and for turning the cam-wheel slowly in the oppositedirection.

GEORGE W. PACKER.

Witnesses:

J. F. STEWARD, WM. A. DREFFEIN.

